Showing no round above 90 from the beginning, your game isn't poor at all. Add a 67 on CCC as an Amateuer (plus a 69 on MER from Am tees as a Pro), this puts you on top of this tier (actually it's 17th in that CCC tournament, best score being 63).
Keep in mind that ony a few can compete in their tier, either by outstanding talent or by playing the system and cheating as re-starting multi-accounters. The others share the journeyman spots.
You have been promoted with the least possible round numbers until now, and this might continue, perhaps accelerated by equipment buys. You might want to play other games than ranked/tourney strokeplay to balance the advances in ranking/tiers and levels. Alternate shot and Matchplay give good XPs, as does playing every day (=> CDP bonus). Level 59 @88,000 XPs and Master tier fit well together!